Radiating or cooling apparatus



Nov. 17, 1925- K. BAUMANN RADIATING on COOLING APPARATUS Filed Sept. 4, 1920 FarIBaumggn ATTORNEY Patented Nov. 17, 1925.

UNITED STATES PATENT OFFICE KARL BAUMANN, OF URMSTON, ENGLAND, ASSIGNOR TO WESTINGHOUSE ELECTRIC AND MANUFACTURING COMLE'ANY, A CORPORATION OF PENNSYLVANIA.

RADIATING OR COOLING AIPARATUS.

Application filed September 4, 1920. Serial no. 408,197.

ToaZZ whom it may concern:

Beit known that I, KARL BAUMANN, a citizen of the Confederation of Switzerland, and a resident of Urmston, in the county of Lancaster, England, have invented a new and useful Improvement in Radiating or Cooling Apparatus, of which the following is a specification.

This invention relates to radiating or cooling apparatus of the kind in which the medium to be cooled, air for example, passes over a plurality of tubes through which water is caused to circulate.

The object ofmy invention is to provide, in conjunctionwith a cooler for air or other fluids in which water is circulated .at a'normal rate to secure a normal amount of cooling at normal capacity, a means for increasing the rate offlow of cooling fluid through the cooler-to increase the capacity thereof to take care of abnormal or over load requirements for the cooled air or fluid. 7

Fig. l is a diagrammatic view illustrating one method of carrying out the invention and Figures 2, 8, 4, and 5 are diagrammatic views illustrating modifications of my improved device.

The efficiency I with which. apparatus of this description operates is considerablyaffected by its internal condition and the velocity of flow of the water through the tubes. The capacity and efliciency of the apparatus can be considerably increased by causing a greater quantity of water to pass through the tubes of the apparatus in a given time, which not only lowers the temperature of the water leaving the apparatus but also increases the efliciency of the heat transmission. between the water and the tubes ofthe apparatus.

Fol-economical reasons it is usually desirable to provide cooling-apparatus of sufficient capacity to dealonly with ordinary norn'ial running conditions and to increase the capacity of the cooler. when necessary by causing a greater quantity of Water to traverse the tubesof the apparatus. Such latter conditions obtain for example in the case of a cooling apparatus adapted.

to cool the ventilating air passing through amachine such, for instance, as an electric generator at such times as the machine has to carry an overload and the heat developed therein is consequently increased.

According to the present invention an additional pump in the supply line, hereinafter for convenience termed a booster pump, is brought into operation at those times at which it'is necessary to increase the quantity of Water passing through the cooler. v 7

Referring to Fig. .1, cooling water is ordinarily supplied through a pipe or passage 1 to the air cooler and the booster pump 2 is connectedin what maybe termed a shunt circuit, the suction pipe 3 of the pump being connected to the pipe ,1 and the discharge pipe {tof the pump being also connected to they pipe 1 but nearer to the cooler than the connection of the suction pipe. A non-return valve 5 is provided in the pipe 1 between the connections .of the pipes 3 and 4 with the object of ensuring that the water delivered by the pump '2 shall pass to the cooling apparatus. I

In Fig. 2 this arrangement of the booster pump is shown applied toa system where the ordinarysupply to the cooler is effected by the circulating pump of a surface condenser. The cooler is indicated at 6 and the steam condenser at 7, the usual circulatingjpump 8 supplying water through the pipe 9 to the condenser, this water being discharged by the pipe 10, The circulating pump 8 also causes water to pass through the pipe 1 to the cooler 6, the water after passing through the cooler being discharged throughthe pipe 1'1 into the pipe 10. 'The booster pump 2 with itssuction and dis-. chargepipes 3 and 4, respectively, and the non-return valve 5 are arranged as shown in Fig. '1. I p

Ina modified construction as shown in Fig. 3, the non returnvalve 5 is omitted and the connection between the discharge of the booster pump 2 and the water supply pipe 1, to the cooling apparatus is ar ranged in the form of an ejector 12 and as will be seen the discharge of Water to the cooling apparatus from the pipe 4' by means of the ejector action increases the quantity of water supplied through the p p In another construction which it is not necessary to illustrate, the booster pump is inserted directly in the water supply pipe or passage to'the cooler. Under normal operating conditions the pump will be idle,

thewaterpassing through the pump withthe heat-exchanger, and an auxiliary pump in said shunt conduit.

7. In combination, a heat-exchanger of the two-fluid type, a conduit for delivering cooling water to said heat-exchanger, amain pump supplying water to the conduit, a shunt conduit having an inlet from and an outlet to the conduit between the main pump and the heat-exchanger, and an auxiliary pump in said shunt conduit.

8. In combination, a heat-exchanger of the two-fluid type, a main conduit for delivering cooling water to said heat-exchanger, a main pump supplying water to the main conduit, a shunt conduit having an inlet from and'an outlet to the main conduit between the main pump and the heat-exchanger, an auxiliary pump in said shunt conduit, and a non-return means in the main conduit between said shunt conduit inlet and KARL BAUMANN. 

